Sirup pump



July 18, 33- J. D. FLETCHER S I RUP PUMP Filed Oct. 24, 1930 m r M M d IF D n M Patented .lnly 1S, 1933 PATENT GFFEQE JOHN D. FLETCHER, OFLOUISVILLE, KENTUCKY SIRUP PUMP Application filed October 24, 1930.

This invention relates to sirup pumps.

An object of the invention is to provide an improved pump withparticular attention to means for cci'itrolling the length of the strokeof the pump and an improved outlet conduit and one in which the quantityof sirup pumped out each stroke may be kept constant.

Further objects and advantages will be come apparent as the descriptionproceeds.

Referring to the accompanying drawing. which is made a part hereof andon which similar reference characters indicate similar parts,

Figure l is a view in elevation with certain par shown in section,

Figure 2, a section on line 2-2 of Figure pump cylinder to wl th issecured a support 11 l a post 12, the latter forming the outlet A pipe13 oort from the pump chamber.

a arged enl 14 which latter is screwed into the member 12. The enlargedme 14 together with the upper enlarged end i the member 12 provide avalve chamber 5 he a ball valve 15 held therein which 1 adapted to restpen a valve seat. The l valve 16 is preferably of some non-coni'naterial such as lwlonel metal. The r and of post is provided with age 17 which is adapted to engage against no lower end of the spout 18,being held against the. spout o crew threaded cap 19 which has a flangeengaging the lower shoul dcr of the flanr; '4". The spout has the usualupon the cover 21. The pc 13 serve as supports for ther has supports forthe Fl I the top of a s1! 7 ar. 'l he spout 18 18 prowith an o t opening22. This open- -ositior at such an angle as will c p nterruptcd passagetherethrough so that there is no splashing, dripping, cisquir ng of thesirup as it leaves the nozzle. In 0 to assist in this result the outletopening lies at a slight angle as shown at 23, as distniguished from theusual sharp Serial No. 490,980.

angle normally, at right angles to the passage 24 in the spout. Securedto or made'integral with the cover 21 is a cylindrical m'em her 25, thelower end of which is provided with a flange 26 to receive a shoulder 27on the piston rod 28. The piston rod 28 has an operating piston 29 onits lower end which moves in the pump cylinder 10. One side of thepiston is cut out at 30 to engage around the circular portion of thepost 12, the post 12 being provided with an outlet port at 31. The smallend 32 of the piston rod extends up within the member 25 and is hollowto receive a threaded stem 33. A compression 1. spring 34.- surroundsthe end 32, the lower end of the spring seating upon the flange 26 andthe upper end being confined against the inner flange of a tube 3-5which slides within the member 25. The purpose of the spring is p toreturn the piston during the idle stroke.

A knob 36 is secured upon the stem 33, this knob having a depending pin37 adapted to engage in any one of a plurality of notches 38 on theinner flange on the sleeve 35. T he purpose of the screw threads on thestem 33 is to adjust the length of the stroke. The limit of the strokeof the pump, of course, is reached when the flange 39 engages the top 40of the casing 25. In operation the knob 36 is pressed down duringpumping stroke to force sirup in the pump chamber out through the port81 pastthe ball check valve 16 into valve chamber 15 and into the tube13 from which it travels out through the outlet spout. Upon the suctionstroke the ball valve 16 drops on its seat and sirup is drawn in throughthe inlet valve 41. This latter valve is held in position by prongs 42on its lower side which are bent out to engage the lower side of thevalve opening. The valve 16 prevents any sirup from flowing hack intothe pump. Upon the pumping stroke therefore additional sirup is forcedup through the spout. By adjusting the screw 33 to any desired verticalposition the length of the stroke may be controlled anc consequently theamount of sirup dispensed at each stroke may be accurately controlled.

In pumps as heretoforeconstructed the outlet pipe 13 was a single piece.This made it difiicult to clean and difficult to assemble the valve. Inmany such constructions a pin was provided for preventing the ball valvefrom being forced up into the outlet tube. By my construction a valvechamber is provided which is larger than the outlet tube. This preventsthe ball valve from being forced up into. the tube. It is; not necessarytherefore to provide a pin for retaining the ball in position. As may beclearly seen the pipe 13 may be unscrewed from the enlarged end 12 andmay be detached from the cover plate and so easily removed to assemble"or disassemble the pump. The out-letv passage is smooth and contains noobstructions which will prevent free outflowing of thesirup and whichwill catch lint that is often shed from the saeks containing the sugarfrom which the sirup ismade and soon cause the outlet passage tobecomeclogged and unsanitary.

Ityvill be obvious to those skilled in the art that various changes maybe made in my device Without departing from the spirit of the inventionand therefore I do not limit myself to What is shown in the drawing anddescribed in the specification, but only as indicated by the appendedclaim.

Having thus fully described my said invention, What I claim as new anddesire to secure bygLetters Patent, is:

A sirup pump having a pumping chamber, a piston operable in said chamberan outlet from said chamber, a spout detachably secured to said outlet,said spout having a bore therethrough, the outer end of said bore beingslightly and gradually curved downwardiv so that the ai'igle formed bythe axis of said outer end of said bore and the axis of the bore of thespout is less than ninety degrees there by providing an uninterruptedpassage for the sirup as it is discharged from the pump, substantiallyas set forth.

JOHN D. FLETCHER.

